26391371 has 2 divisors, whose sum is σ = 26391372. Its totient is φ = 26391370.

The previous prime is 26391353. The next prime is 26391383. The reversal of 26391371 is 17319362.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26391371 - 2⁶ = 26391307 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26391301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13195685 + 13195686.

It is an arithmetic number, because the mean of its divisors is an integer number (13195686).

Almost surely, 2^26391371 is an apocalyptic number.

26391371 is a deficient number, since it is larger than the sum of its proper divisors (1).

26391371 is an equidigital number, since it uses as much as digits as its factorization.

26391371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 26391371 is about 5137.2532544152. The cubic root of 26391371 is about 297.7286653810.

It can be divided in two parts, 26391 and 371, that added together give a palindrome (26762).

The spelling of 26391371 in words is "twenty-six million, three hundred ninety-one thousand, three hundred seventy-one".